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Polini Thor 80 – Lightweight 18 HP Liquid-Cooled Paramotor Engine

from $2,949.99

Compact Power with Outstanding Thermal Control

The Polini Thor 80 is a lightweight, high-performance 2-stroke paramotor engine designed for pilots who need maximum thrust and compact design. Weighing just 25.1 lbs including the radiator, this powerhouse produces 18 HP and delivers up to 137 lbs of static thrust with a 51" propeller—all while maintaining excellent thermal stability through its liquid cooling system.

Model:

Compact Power with Outstanding Thermal Control

The Polini Thor 80 is a lightweight, high-performance 2-stroke paramotor engine designed for pilots who need maximum thrust and compact design. Weighing just 25.1 lbs including the radiator, this powerhouse produces 18 HP and delivers up to 137 lbs of static thrust with a 51" propeller—all while maintaining excellent thermal stability through its liquid cooling system.

Engine Type2-stroke, single-cylinder
Displacement86 cc
Bore x Stroke1.97" × 1.73" (50 × 44 mm)
Max Power Output18 HP @ 10,450 RPM
Max Static Thrust137 lbs (62 kg) with 51" propeller
Fuel Consumption~0.71 gal/hr (2.7 L/hr) @ 66 lbs thrust
CoolingLiquid-cooled with crankshaft-driven pump
StarterManual Flash Starter
Gear ReductionHelical gears in oil bath, 3.58:1 ratio
ClutchDry centrifugal
Carburetor OptionsPolini CP Ø21 or Walbro WG8
Air FilterCompact carbon-look airbox
IgnitionElectronic
Compression Ratio14:1
CylinderAluminum with nickel-silicon coating
PistonDual 1 mm chrome rings, high-silicon alloy
Fuel TypeUnleaded 95 octane (E5) or 100LL AVgas with 2.5% full-synthetic oil
Weight25.1 lbs (11.4 kg) including radiator
Propeller RotationClockwise
Made In100% Italy

🛠 Engine Features

🌀 Liquid Cooling System

The Thor 80 uses a compact radiator integrated with the engine and a forced circulation pump driven by the crankshaft. This system maintains even temperatures across the cylinder, ensuring thermal stability even during extended flight.

🔊 Compact Exhaust

A newly designed round aluminum silencer keeps noise low while minimizing bulk. The expansion system improves combustion efficiency without adding excess weight.

⚙️ Fuel & Carburetion

Available with either the Polini CP Ø21mm carburetor or Walbro WG8, both systems are designed for smooth throttle response and linear power across the full RPM range. A manual fuel pump and recovery tank allow clean fuel management and leak-free transport.

💨 Air Intake

The modern carbon-look airbox not only reduces engine noise but also uses a high-tech filter element for clean airflow. Its compact size fits neatly into tight paramotor frames.

🛡️ Safety & Construction

  • Dry centrifugal clutch increases safety during warm-up and taxi

  • Helical gear reduction softens torque transfer to the prop

  • Ultra-lightweight ERGAL alloy silent blocks reduce vibration

  • Supplied with CHT sensor (Cylinder Head Temp) standard

  • Optional RPM/hour meter and manual throttle lever available

🧩 Mounting System

The Thor 80 uses the universal Polini Thor mounting pattern, allowing easy installation or swaps between other Thor engines (e.g., 130, 190, 202).

🧑‍✈️ Ideal Use Cases

  • Ultralight paramotors

  • Training schools

  • Competition slalom setups

  • Lightweight trikes

  • Pilots seeking max thrust-to-weight performance

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